package com.fled.itsmbigscreen.utils;

import org.springframework.util.StringUtils;

import java.sql.Timestamp;
import java.text.*;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.time.temporal.TemporalAdjusters;
import java.util.*;

public final class TimeTool {


    //============================借助Calendar类获取今天、昨天、本周、上周、本年及特定时间的开始时间和结束时间（返回类型为date类型）========================

    /**
     * 获取当天开始时间
     *
     * @return
     */
    public static Date getDayBegin() {
        Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("Asia/Shanghai"));
        cal.setTime(new Date());
        cal.set(Calendar.HOUR_OF_DAY, 0);//0点
        cal.set(Calendar.MINUTE, 0);//0分
        cal.set(Calendar.SECOND, 0);//0秒
        return cal.getTime();
    }
    /**
     * 获取当天开始时间
     *
     * @return
     */
    public static Date getDayBegin(Date date) {
        Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("Asia/Shanghai"));
        cal.setTime(date);
        cal.set(Calendar.HOUR_OF_DAY, 0);//0点
        cal.set(Calendar.MINUTE, 0);//0分
        cal.set(Calendar.SECOND, 0);//0秒
        return cal.getTime();
    }

    /**
     * 获取当天开始时间
     *
     * @return
     */
    public static LocalDateTime getDayBeginLocalDateTime(LocalDate time) {
        if (time == null) {
            time = LocalDate.now();
        }
        LocalDateTime today_start = LocalDateTime.of(time, LocalTime.MIN);
        return today_start;
    }

    /**
     * 获取当天结束时间
     *
     * @return
     */
    public static LocalDateTime getDayEndLocalDateTime(LocalDate time) {
        if (time == null) {
            time = LocalDate.now();
        }
        LocalDateTime today_end = LocalDateTime.of(time, LocalTime.MAX);
        return today_end;
    }


    /**
     * 时间戳转localDateTime
     *
     * @return
     */
    public static LocalDateTime LongToLocalDateTime(Long time) {
        if (time == null) {
            return null;
        }
        //获得时间戳
        long milliseconds = time;
        // 将时间戳转为当前时间
        LocalDateTime localDateTime = LocalDateTime.ofEpochSecond(milliseconds / 1000, 0, ZoneOffset.ofHours(8));
        // 2020-02-03T13:35:53
        return localDateTime;
    }

    /**
     * 时间戳转localDateTime
     *
     * @return
     */
    public static LocalDate LongToLocalDate(Long time) {
        //获得时间戳
        if (time == null) {
            return null;
        }
        long milliseconds = time;
        // 将时间戳转为当前时间
        LocalDate localDate = LocalDateTime.ofInstant(Instant.ofEpochMilli(time), ZoneId.systemDefault()).toLocalDate();
//        LocalDateTime localDateTime = LocalDateTime.ofEpochSecond(milliseconds/1000, 0, ZoneOffset.ofHours(8));
        // 2020-02-03T13:35:53
        return localDate;
    }


    /**
     * localDateTime转时间戳
     *
     * @return
     */
    public static Long LocalDateTimeToLong(LocalDateTime time) {
        if (time != null) {
            return LocalDateTime.now().toInstant(ZoneOffset.of("+8")).toEpochMilli();
        } else {
            return time.toInstant(ZoneOffset.of("+8")).toEpochMilli();
        }

    }

    /**
     * localDate转时间戳
     *
     * @return
     */
    public static Long LocalDateToLong(LocalDate time) {
        if (time != null) {
            return time.atStartOfDay(ZoneId.systemDefault()).toInstant().toEpochMilli();
        } else {
            return null;
        }

    }

    /**
     * localDateTime 格式化
     *
     * @return
     */
    public static String LocalDateTimeFormat(LocalDateTime time) {
        if (time == null) {
            return null;
        }
//        ZonedDateTime zonedDateTime = time.atOffset()
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss");
        String format = formatter.format(time);
//        DateTimeFormatter formatter2 = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss").withZone(ZoneId.of("CST+08:00"));
//        String format2 = formatter2.format(time);
//        System.out.println(format2);
        return format;
    }


    /**
     * localDateTime 格式化
     *
     * @return
     */
    public static String LocalDateTimeFormatWithOutTime(LocalDateTime time) {
        if (time == null) {
            return null;
        }
//        ZonedDateTime zonedDateTime = time.atOffset()
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy/MM/dd");
        String format = formatter.format(time);
//        DateTimeFormatter formatter2 = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss").withZone(ZoneId.of("CST+08:00"));
//        String format2 = formatter2.format(time);
//        System.out.println(format2);
        return format;
    }

    /**
     * localDateTime 格式化无时间
     *
     * @return
     */
    public static String LocalDateTimeFormatNoTime(LocalDateTime time) {
        if (time == null) {
            return null;
        }

        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        String format = formatter.format(time);
        return format;
    }

    /**
     * localDateTime 格式化无时间
     *
     * @return
     */
    public static String LocalDateTimeFormatYearMonth(LocalDateTime time) {
        if (time == null) {
            return null;
        }

        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy/MM");
        String format = formatter.format(time);
        return format;
    }

    /**
     * localDateTime 格式化无时间
     *
     * @return
     */
    public static String LocalDateFormatNoTime(LocalDate time) {
        if (time == null) {
            return null;
        }

        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        String format = formatter.format(time);
        return format;
    }

    /**
     * localDateTime 格式化无时间
     *
     * @return
     */
    public static String LocalDateTimeFormatNoDays(LocalDateTime time) {
        if (time == null) {
            return null;
        }

        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("HH:mm");
        String format = formatter.format(time);
        return format;
    }


    /**
     * 获取当天结束时间
     *
     * @return
     */
    public static Date getDayEnd() {
        Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("Asia/Shanghai"));
        cal.setTime(new Date());
        cal.set(Calendar.HOUR_OF_DAY, 23);//23点
        cal.set(Calendar.MINUTE, 59);//59分
        cal.set(Calendar.SECOND, 59);//59秒
        return cal.getTime();
    }
    /**
     * 获取当天结束时间
     *
     * @return
     */
    public static Date getDayEnd(Date date) {
        Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("Asia/Shanghai"));
        cal.setTime(date);
        cal.set(Calendar.HOUR_OF_DAY, 23);//23点
        cal.set(Calendar.MINUTE, 59);//59分
        cal.set(Calendar.SECOND, 59);//59秒
        return cal.getTime();
    }


    /**
     * 获取昨天开始时间
     *
     * @return
     */
    public static Date getBeginDayOfYesterday() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getDayBegin());//当天开始时间
        cal.add(Calendar.DAY_OF_MONTH, -1);//当天月份天数减1
        return cal.getTime();
    }


    /**
     * 获取昨天结束时间
     *
     * @return
     */
    public static Date getEndDayOfYesterday() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getDayEnd());//当天结束时间
        cal.add(Calendar.DAY_OF_MONTH, -1);//当天月份天数减1
        return cal.getTime();
    }


    /**
     * 获取明天开始时间
     *
     * @return
     */
    public static Date getBeginDayOfTomorrow() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getDayBegin());//当天开始时间
        cal.add(Calendar.DAY_OF_MONTH, 1);//当天月份天数加1
        return cal.getTime();
    }

    /**
     * 获取本月开始时间
     *
     * @return
     */
    public static LocalDateTime getBeginDayOfMonthLocalDateTime() {
        LocalDateTime date = LocalDateTime.now();
        LocalDateTime firstday = date.with(TemporalAdjusters.firstDayOfMonth());
        return firstday;
    }


    /**
     * 获取本月开始时间
     *
     * @return
     */
    public static LocalDateTime getBeginDayOfLastMonthLocalDateTime() {
        LocalDateTime date = LocalDateTime.now().plusDays(-1);
        LocalDateTime firstday = date.with(TemporalAdjusters.firstDayOfMonth());
        return firstday;
    }

    /**
     * 获取本月结束时间
     *
     * @return
     */
    public static LocalDateTime getEndDayOfMonthLocalDateTime() {
        LocalDateTime date = LocalDateTime.now();
        LocalDateTime lastDay = date.with(TemporalAdjusters.lastDayOfMonth());
        return lastDay;
    }

    /**
     * 获取本年开始时间
     *
     * @return
     */
    public static LocalDateTime getStartDayOfYearLocalDateTime() {
        LocalDateTime date = LocalDateTime.now();
        LocalDateTime lastDay = date.with(TemporalAdjusters.firstDayOfYear());
        return lastDay;
    }

    /**
     * 获取本年结束时间
     *
     * @return
     */
    public static LocalDateTime getEndDayOfYearLocalDateTime() {
        LocalDateTime date = LocalDateTime.now();
        LocalDateTime lastDay = date.with(TemporalAdjusters.lastDayOfYear());
        return lastDay;
    }

    /**
     * 获取去年开始时间
     *
     * @return
     */
    public static LocalDateTime getStartDayOfLastYearLocalDateTime() {
        LocalDateTime date = LocalDateTime.now().minusYears(1);
        LocalDateTime lastDay = date.with(TemporalAdjusters.firstDayOfYear());
        return lastDay;
    }

    /**
     * 获取去年结束时间
     *
     * @return
     */
    public static LocalDateTime getEndDayOfLastYearLocalDateTime() {
        LocalDateTime date = LocalDateTime.now().minusYears(1);
        LocalDateTime lastDay = date.with(TemporalAdjusters.lastDayOfYear());
        return lastDay;
    }

    /**
     * 获取本月结束时间
     *
     * @return
     */
    public static LocalDateTime getEndDayOfLastMonthLocalDateTime() {
        LocalDateTime date = LocalDateTime.now().plusDays(-1);
        LocalDateTime lastDay = date.with(TemporalAdjusters.lastDayOfMonth());
        return lastDay;
    }

    /**
     * 根据时间文字生成时间 包含 yyyy-MM-dd ,yyyy-MM-dd HH:mm:ss
     *
     * @param timeStr
     * @return
     */
    public static LocalDateTime stringToLocalDateTimeUpdate(String timeStr) {
        if (StringUtils.isEmpty(timeStr)) {
            return null;
        }
        DateTimeFormatter fmt = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        if (timeStr.length() > 10) {
            fmt = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        }
        LocalDateTime localDateTime;
        if (timeStr.length() <= 10) {
            LocalDate date2 = LocalDate.parse(timeStr, fmt);
            Long aLong = TimeTool.LocalDateToLong(date2);
            localDateTime = TimeTool.LongToLocalDateTime(aLong);
        } else {
            localDateTime = LocalDateTime.parse(timeStr, fmt);
        }
        return localDateTime;
    }

    /**
     * 根据时间文字生成时间 包含 yyyy-MM-dd ,yyyy-MM-dd HH:mm:ss
     *
     * @param timeStr
     * @return
     */
    public static LocalDateTime stringToLocalDateTimeUpdate1(String timeStr) {
        if (StringUtils.isEmpty(timeStr)) {
            return null;
        }
        DateTimeFormatter fmt = DateTimeFormatter.ofPattern("yyyy年MM月dd日");
        if (timeStr.length() > 10) {
            fmt = DateTimeFormatter.ofPattern("yyyy年MM月dd日 HH:mm:ss");
        }
        LocalDateTime localDateTime;
        if (timeStr.length() <= 10) {
            LocalDate date2 = LocalDate.parse(timeStr, fmt);
            Long aLong = TimeTool.LocalDateToLong(date2);
            localDateTime = TimeTool.LongToLocalDateTime(aLong);
        } else {
            localDateTime = LocalDateTime.parse(timeStr, fmt);
        }
        return localDateTime;
    }

    /**
     * 获取明天结束时间
     *
     * @return
     */
    public static Date getEndDayOfTomorrow() {
        Calendar cal = Calendar.getInstance();
        cal.setTime(getDayEnd());//当天结束时间
        cal.add(Calendar.DAY_OF_MONTH, 1);//当天月份天数加1
        return cal.getTime();
    }


    /**
     * 获取某个日期的开始时间
     *
     * @param d
     * @return
     */
    public static Timestamp getDayStartTime(Date d) {
        Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("Asia/Shanghai"));
        if (null != d) {
            calendar.setTime(d);
        }
        calendar.set(calendar.get(Calendar.YEAR),
                calendar.get(Calendar.MONTH),
                calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        return new Timestamp(calendar.getTimeInMillis());
    }


    /**
     * 获取某个日期的结束时间
     *
     * @param d
     * @return
     */
    public static Timestamp getDayEndTime(Date d) {
        Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("Asia/Shanghai"));
        if (null != d) {
            calendar.setTime(d);
        }
        calendar.set(calendar.get(Calendar.YEAR),
                calendar.get(Calendar.MONTH),
                calendar.get(Calendar.DAY_OF_MONTH), 23, 59, 59);
        return new Timestamp(calendar.getTimeInMillis());
    }


    /**
     * 获取本周的开始时间
     *
     * @return
     */
    @SuppressWarnings("unused")
    public static Date getBeginDayOfWeek() {
        Date date = new Date();
        if (date == null) {
            return null;
        }
        Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("Asia/Shanghai"));
        cal.setTime(date);
        int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
        if (dayOfWeek == 1) {
            dayOfWeek += 7;
        }
        cal.add(Calendar.DATE, 2 - dayOfWeek);
        return getDayStartTime(cal.getTime());
    }


    /**
     * 获取本周的结束时间
     *
     * @return
     */
    public static Date getEndDayOfWeek() {
        Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("Asia/Shanghai"));
        cal.setTime(getBeginDayOfWeek());
        cal.add(Calendar.DAY_OF_WEEK, 6);
        Date weekEndSta = cal.getTime();
        return getDayEndTime(weekEndSta);
    }


    /**
     * 获取上周开始时间
     */
    @SuppressWarnings("unused")
    public static Date getBeginDayOfLastWeek() {
        Date date = new Date();
        if (date == null) {
            return null;
        }
        Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("Asia/Shanghai"));
        cal.setTime(date);
        int dayofweek = cal.get(Calendar.DAY_OF_WEEK);
        if (dayofweek == 1) {
            dayofweek += 7;
        }
        cal.add(Calendar.DATE, 2 - dayofweek - 7);
        return getDayStartTime(cal.getTime());
    }


    /**
     * 获取上周的结束时间
     *
     * @return
     */
    public static Date getEndDayOfLastWeek() {
        Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("Asia/Shanghai"));
        cal.setTime(getBeginDayOfLastWeek());
        cal.add(Calendar.DAY_OF_WEEK, 6);
        Date weekEndSta = cal.getTime();
        return getDayEndTime(weekEndSta);
    }


    /**
     * 获取今年是哪一年
     *
     * @return
     */
    public static Integer getNowYear() {
        Date date = new Date();
        GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance(TimeZone.getTimeZone("Asia/Shanghai"));
        gc.setTime(date);
        return Integer.valueOf(gc.get(1));
    }

    /**
     * 获取现在年月 2020/01
     *
     * @return
     */
    public static String getNowYearMonth() {
        LocalDate now = LocalDate.now();
        Integer monthValue = now.getMonthValue();
        Integer yearValue = now.getYear();
        String s = yearValue + "/" + monthValue;
        return s;
    }

    /**
     * 获取现在年 2021
     *
     * @return
     */
    public static String getNowYearStr() {
        LocalDate now = LocalDate.now();
        Integer yearValue = now.getYear();
        return yearValue.toString();
    }


    /**
     * 获取本月是哪一月
     *
     * @return
     */
    public static Integer getNowMonth() {
        Date date = new Date();
        GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
        gc.setTime(date);
        return gc.get(2) + 1;
    }


    /**
     * 获取本月的开始时间
     *
     * @return
     */
    public static Date getBeginDayOfMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(getNowYear(), getNowMonth() - 1, 1);
        return getDayStartTime(calendar.getTime());
    }

    /**
     * Date转LocalDateTime
     *
     * @return
     */
    public static LocalDateTime getDateToLocalDateTime(Date date) {
        Instant instant = date.toInstant();
        ZoneId zoneId = ZoneId.systemDefault();
        LocalDateTime localDateTime = instant.atZone(zoneId).toLocalDateTime();
        return localDateTime;
    }

    /**
     * 获取本月的结束时间
     *
     * @return
     */
    public static Date getEndDayOfMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(getNowYear(), getNowMonth() - 1, 1);
        int day = calendar.getActualMaximum(5);
        calendar.set(getNowYear(), getNowMonth() - 1, day);
        return getDayEndTime(calendar.getTime());
    }


    /**
     * 获取上月的开始时间
     *
     * @return
     */
    public static Date getBeginDayOfLastMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(getNowYear(), getNowMonth() - 2, 1);
        return getDayStartTime(calendar.getTime());
    }


    /**
     * 获取上月的结束时间
     *
     * @return
     */
    public static Date getEndDayOfLastMonth() {
        Calendar calendar = Calendar.getInstance();
        calendar.set(getNowYear(), getNowMonth() - 2, 1);
        int day = calendar.getActualMaximum(5);
        calendar.set(getNowYear(), getNowMonth() - 2, day);
        return getDayEndTime(calendar.getTime());
    }


    /**
     * 获取本年的开始时间
     *
     * @return
     */
    public static Date getBeginDayOfYear() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, getNowYear());
        cal.set(Calendar.MONTH, Calendar.JANUARY);
        cal.set(Calendar.DATE, 1);
        return getDayStartTime(cal.getTime());
    }
    /**
     * 获取本年的开始时间
     *
     * @return
     */
    public static Date getBeginDayOfYear(Integer year) {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, year);
        cal.set(Calendar.MONTH, Calendar.JANUARY);
        cal.set(Calendar.DATE, 1);
        return getDayStartTime(cal.getTime());
    }

    public static LocalDate beginYear() {
        Instant instant = getBeginDayOfYear().toInstant();
        ZoneId zoneId = ZoneId.systemDefault();
        LocalDate localDate = instant.atZone(zoneId).toLocalDate();
        return localDate;
    }

    /**
     * 获取本年的结束时间
     *
     * @return
     */
    public static Date getEndDayOfYear() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, getNowYear());
        cal.set(Calendar.MONTH, Calendar.DECEMBER);
        cal.set(Calendar.DATE, 31);
        return getDayEndTime(cal.getTime());
    }
    /**
     * 获取本年的结束时间
     *
     * @return
     */
    public static Date getEndDayOfYear(Integer year) {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, year);
        cal.set(Calendar.MONTH, Calendar.DECEMBER);
        cal.set(Calendar.DATE, 31);
        return getDayEndTime(cal.getTime());
    }

    public static LocalDate endYear() {
        Instant instant = getEndDayOfYear().toInstant();
        ZoneId zoneId = ZoneId.systemDefault();
        LocalDate localDate = instant.atZone(zoneId).toLocalDate();
        return localDate;
    }

    /**
     * 获取去年的开始时间
     *
     * @return
     */
    public static Date beginDayOfYear() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, getNowYear() - 1);
        cal.set(Calendar.MONTH, Calendar.JANUARY);
        cal.set(Calendar.DATE, 1);
        return getDayStartTime(cal.getTime());
    }

    public static LocalDate beginLastYear() {
        Instant instant = beginDayOfYear().toInstant();
        ZoneId zoneId = ZoneId.systemDefault();
        LocalDate localDate = instant.atZone(zoneId).toLocalDate();
        return localDate;
    }

    /**
     * 获取去年的结束时间
     *
     * @return
     */
    public static Date endDayOfYear() {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, getNowYear() - 1);
        cal.set(Calendar.MONTH, Calendar.DECEMBER);
        cal.set(Calendar.DATE, 31);
        return getDayEndTime(cal.getTime());
    }

    public static LocalDate endLastYear() {
        Instant instant = endDayOfYear().toInstant();
        ZoneId zoneId = ZoneId.systemDefault();
        LocalDate localDate = instant.atZone(zoneId).toLocalDate();
        return localDate;
    }

    /**
     * 两个日期相减得到的天数
     *
     * @param beginDate
     * @param endDate
     * @return
     */
    public static int getDiffDays(Date beginDate, Date endDate) {
        if (beginDate == null || endDate == null) {
            throw new IllegalArgumentException("getDiffDays param is null!");
        }
        long diff = (endDate.getTime() - beginDate.getTime()) / (1000 * 60 * 60 * 24);
        int days = new Long(diff).intValue();
        return days;
    }


    /**
     * 两个日期相减得到的毫秒数
     *
     * @param beginDate
     * @param endDate
     * @return
     */
    public static long dateDiff(Date beginDate, Date endDate) {
        long date1ms = beginDate.getTime();
        long date2ms = endDate.getTime();
        return date2ms - date1ms;
    }


    /**
     * 获取两个日期中的最大日起
     *
     * @param beginDate
     * @param endDate
     * @return
     */
    public static Date max(Date beginDate, Date endDate) {
        if (beginDate == null) {
            return endDate;
        }
        if (endDate == null) {
            return beginDate;
        }
        if (beginDate.after(endDate)) {//beginDate日期大于endDate
            return beginDate;
        }
        return endDate;
    }


    /**
     * 获取两个日期中的最小日期
     *
     * @param beginDate
     * @param endDate
     * @return
     */
    public static Date min(Date beginDate, Date endDate) {
        if (beginDate == null) {
            return endDate;
        }
        if (endDate == null) {
            return beginDate;
        }
        if (beginDate.after(endDate)) {
            return endDate;
        }
        return beginDate;
    }


    /**
     * 获取某月该季度的第一个月
     *
     * @param date
     * @return
     */
    public static Date getFirstSeasonDate(Date date) {
        final int[] SEASON = {1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4};
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int sean = SEASON[cal.get(Calendar.MONTH)];
        cal.set(Calendar.MONTH, sean * 3 - 3);
        return cal.getTime();
    }


    /**
     * 返回某个日期下几天的日期
     *
     * @param date
     * @param i
     * @return
     */
    public static Date getNextDay(Date date, int i) {
        Calendar cal = new GregorianCalendar();
        cal.setTime(date);
        cal.set(Calendar.DATE, cal.get(Calendar.DATE) + i);
        return cal.getTime();
    }


    /**
     * 返回某个日期前几天的日期
     *
     * @param date
     * @param i
     * @return
     */
    public static Date getFrontDay(Date date, int i) {
        Calendar cal = new GregorianCalendar();
        cal.setTime(date);
        cal.set(Calendar.DATE, cal.get(Calendar.DATE) - i);
        return cal.getTime();
    }


    /**
     * 获取某年某月按天切片日期集合（某个月间隔多少天的日期集合）
     *
     * @param beginYear
     * @param beginMonth
     * @param k
     * @return
     */
    @SuppressWarnings({"unchecked", "rawtypes"})
    public static List getTimeList(int beginYear, int beginMonth, int k) {
        List list = new ArrayList();
        Calendar begincal = new GregorianCalendar(beginYear, beginMonth, 1);
        int max = begincal.getActualMaximum(Calendar.DATE);
        for (int i = 1; i < max; i = i + k) {
            list.add(begincal.getTime());
            begincal.add(Calendar.DATE, k);
        }
        begincal = new GregorianCalendar(beginYear, beginMonth, max);
        list.add(begincal.getTime());
        return list;
    }


    /**
     * 获取某年某月到某年某月按天的切片日期集合（间隔天数的集合）
     *
     * @param beginYear
     * @param beginMonth
     * @param endYear
     * @param endMonth
     * @param k
     * @return
     */
    @SuppressWarnings({"rawtypes", "unchecked"})
    public static List getTimeList(int beginYear, int beginMonth, int endYear, int endMonth, int k) {
        List list = new ArrayList();
        if (beginYear == endYear) {
            for (int j = beginMonth; j <= endMonth; j++) {
                list.add(getTimeList(beginYear, j, k));
            }
        } else {
            {
                for (int j = beginMonth; j < 12; j++) {
                    list.add(getTimeList(beginYear, j, k));
                }
                for (int i = beginYear + 1; i < endYear; i++) {
                    for (int j = 0; j < 12; j++) {
                        list.add(getTimeList(i, j, k));
                    }
                }
                for (int j = 0; j <= endMonth; j++) {
                    list.add(getTimeList(endYear, j, k));
                }
            }
        }
        return list;
    }


    //=================================时间格式转换==========================

    /**
     * date类型进行格式化输出（返回类型：String）
     *
     * @param date
     * @return
     */
    public static String dateFormat(Date date) {
        if (date == null) {
            return null;
        }
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        formatter.setTimeZone(TimeZone.getTimeZone("GMT+8"));
        String dateString = formatter.format(date);
        return dateString;
    }

    public static String dateFormatNo(Date date) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMddHHmmss");
        formatter.setTimeZone(TimeZone.getTimeZone("GMT+8"));
        String dateString = formatter.format(date);
        return dateString;
    }

    /**
     * date类型进行格式化输出（返回类型：String）
     *
     * @param date
     * @return
     */
    public static String dateFormatNoSS(Date date) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm");
        formatter.setTimeZone(TimeZone.getTimeZone("GMT+8"));
        String dateString = formatter.format(date);
        return dateString;
    }

    /**
     * date类型进行格式化输出（返回类型：String）
     *
     * @param date
     * @return
     */
    public static String dateFormatNoTime(Date date) {
        if (date == null) {
            return null;
        }
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        formatter.setTimeZone(TimeZone.getTimeZone("GMT+8"));
        String dateString = formatter.format(date);
        return dateString;
    }

    /**
     * date类型进行格式化输出（返回类型：String）
     *
     * @param date
     * @return
     */
    public static String dateFormatOnlyTime(Date date) {
        SimpleDateFormat formatter = new SimpleDateFormat(" HH:mm");
        formatter.setTimeZone(TimeZone.getTimeZone("GMT+8"));
        String dateString = formatter.format(date);
        return dateString;
    }


    /**
     * 将"2015-08-31 21:08:06"型字符串转化为Date
     *
     * @param str
     * @return
     * @throws ParseException
     */
    public static Date StringToDate(String str) throws ParseException {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = (Date) formatter.parse(str);
        return date;
    }

    /**
     * 将"2015-08-31 21:08:06"型字符串转化为Date
     *
     * @param str
     * @return
     * @throws ParseException
     */
    public static Date StringToDateNoTime(String str) throws ParseException {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        Date date = (Date) formatter.parse(str);
        return date;
    }


    /**
     * 将"2015-08-31 21:08:06"型字符串转化为Date
     *
     * @param str
     * @return
     * @throws ParseException
     */
    public static Date StringToDateWithOutTime(String str) throws ParseException {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy/MM/dd");
        Date date = (Date) formatter.parse(str);
        return date;
    }


    /**
     * 将CST时间类型字符串进行格式化输出
     *
     * @param str
     * @return
     * @throws ParseException
     */
    public static String CSTFormat(String str) throws ParseException {
        SimpleDateFormat formatter = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.US);
        Date date = (Date) formatter.parse(str);
        return dateFormat(date);
    }


    /**
     * 将long类型转化为Date
     *
     * @param str
     * @return
     * @throws ParseException
     */
    public static Date LongToDare(long str) {
        return new Date(str);
    }

    public static long DareToLong(Date str) throws ParseException {
        return str.getTime() * 1000;
    }


    //====================================其他常见日期操作方法======================

    /**
     * 判断当前日期是否在[startDate, endDate]区间
     *
     * @param startDate 开始日期
     * @param endDate   结束日期
     * @return
     * @author jqlin
     */
    public static boolean isEffectiveDate(Date startDate, Date endDate) {
        if (startDate == null || endDate == null) {
            return false;
        }
        long currentTime = new Date().getTime();
        if (currentTime >= startDate.getTime()
                && currentTime <= endDate.getTime()) {
            return true;
        }
        return false;
    }


    /**
     * 得到二个日期间的间隔天数
     *
     * @param secondString：后一个日期
     * @param firstString：前一个日期
     * @return
     */
    public static String getTwoDay(String secondString, String firstString) {
        SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
        long day = 0;
        try {
            Date secondTime = myFormatter.parse(secondString);
            Date firstTime = myFormatter.parse(firstString);
            day = (secondTime.getTime() - firstTime.getTime()) / (24 * 60 * 60 * 1000);
        } catch (Exception e) {
            return "";
        }
        return day + "";
    }


    /**
     * 时间前推或后推分钟,其中JJ表示分钟.
     *
     * @param StringTime：时间
     * @param minute：分钟（有正负之分）
     * @return
     */
    public static Date getPreTime(Date StringTime, Integer minute) {
        String mydate1 = "";
        try {
            Date date1 = StringTime;
            long Time = (date1.getTime() / 1000) + minute * 60;
            date1.setTime(Time * 1000);
            return date1;
//            mydate1 = format.format(date1);
        } catch (Exception e) {
            return null;
        }

    }

    /**
     * 获取当前时间后几分钟
     *
     * @param minute
     * @return
     */
    public static LocalDateTime plusTime(Integer minute) {
        LocalDateTime time = LocalDateTime.now();
        time = time.plusMinutes(minute);
        return time;
    }

    /**
     * 获取当前时间前几分钟
     *
     * @param minute
     * @return
     */
    public static LocalDateTime minTime(Integer minute) {
        LocalDateTime time = LocalDateTime.now();
        time = time.minusMinutes(minute);
        return time;
    }


    /**
     * 将短时间格式字符串转换为时间 yyyy-MM-dd
     *
     * @param strDate
     * @return
     */
    public static Date strToDate(String strDate) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        ParsePosition pos = new ParsePosition(0);
        Date strtodate = formatter.parse(strDate, pos);
        return strtodate;
    }


    /**
     * 得到一个时间延后或前移几天的时间
     *
     * @param nowdate：时间
     * @param delay：前移或后延的天数
     * @return
     */
    public static String getNextDay(String nowdate, String delay) {
        try {
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
            format.setTimeZone(TimeZone.getTimeZone("GMT+8"));
            String mdate = "";
            Date d = strToDate(nowdate);
            long myTime = (d.getTime() / 1000) + Integer.parseInt(delay) * 24 * 60 * 60;
            d.setTime(myTime * 1000);
            mdate = format.format(d);
            return mdate;
        } catch (Exception e) {
            return "";
        }
    }


    /**
     * 判断是否闰年
     *
     * @param ddate
     * @return
     */
    public static boolean isLeapYear(String ddate) {
        /**
         * 详细设计： 1.被400整除是闰年，否则： 2.不能被4整除则不是闰年 3.能被4整除同时不能被100整除则是闰年
         * 3.能被4整除同时能被100整除则不是闰年
         */
        Date d = strToDate(ddate);
        GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
        gc.setTime(d);
        int year = gc.get(Calendar.YEAR);
        if ((year % 400) == 0) {
            return true;
        } else if ((year % 4) == 0) {
            if ((year % 100) == 0) {
                return false;
            } else {
                return true;
            }
        } else {
            return false;
        }
    }


    /**
     * 返回美国时间格式
     *
     * @param str
     * @return
     */
    public static String getEDate(String str) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
        ParsePosition pos = new ParsePosition(0);
        Date strtodate = formatter.parse(str, pos);
        String j = strtodate.toString();
        String[] k = j.split(" ");
        return k[2] + k[1].toUpperCase() + k[5].substring(2, 4);
    }


    /**
     * 判断二个时间是否在同一个周
     *
     * @param date1
     * @param date2
     * @return
     */
    public static boolean isSameWeekDates(Date date1, Date date2) {
        Calendar cal1 = Calendar.getInstance();
        Calendar cal2 = Calendar.getInstance();
        cal1.setTime(date1);
        cal2.setTime(date2);
        int subYear = cal1.get(Calendar.YEAR) - cal2.get(Calendar.YEAR);
        if (0 == subYear) {
            if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)) {
                return true;
            }
        } else if (1 == subYear && 11 == cal2.get(Calendar.MONTH)) {
            // 如果12月的最后一周横跨来年第一周的话则最后一周即算做来年的第一周
            if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)) {
                return true;
            }
        } else if (-1 == subYear && 11 == cal1.get(Calendar.MONTH)) {
            if (cal1.get(Calendar.WEEK_OF_YEAR) == cal2.get(Calendar.WEEK_OF_YEAR)) {
                return true;
            }
        }
        return false;
    }


    /**
     * 产生周序列,即得到当前时间所在的年度是第几周
     *
     * @return
     */
    public static String getSeqWeek() {
        Calendar c = Calendar.getInstance(Locale.CHINA);
        String week = Integer.toString(c.get(Calendar.WEEK_OF_YEAR));
        if (week.length() == 1)
            week = "0" + week;
        String year = Integer.toString(c.get(Calendar.YEAR));
        return year + "年第" + week + "周";
    }


    /**
     * 获得一个日期所在的周的星期几的日期，如要找出2002年2月3日所在周的星期一是几号
     *
     * @param sdate：日期
     * @param num：星期几（星期天是一周的第一天）
     * @return
     */
    public static String getWeek(String sdate, String num) {
        // 再转换为时间
        Date dd = strToDate(sdate);
        Calendar c = Calendar.getInstance();
        c.setTime(dd);
        if (num.equals("1")) // 返回星期一所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
        else if (num.equals("2")) // 返回星期二所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.TUESDAY);
        else if (num.equals("3")) // 返回星期三所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.WEDNESDAY);
        else if (num.equals("4")) // 返回星期四所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.THURSDAY);
        else if (num.equals("5")) // 返回星期五所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.FRIDAY);
        else if (num.equals("6")) // 返回星期六所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.SATURDAY);
        else if (num.equals("0")) // 返回星期日所在的日期
            c.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
        return new SimpleDateFormat("yyyy-MM-dd").format(c.getTime());
    }


    /**
     * 根据一个日期，返回是星期几的字符串
     *
     * @param sdate
     * @return
     */
    public static String getWeek(String sdate) {
        // 再转换为时间
        Date date = strToDate(sdate);
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        // int hour=c.get(Calendar.DAY_OF_WEEK);
        // hour中存的就是星期几了，其范围 1~7
        // 1=星期日 7=星期六，其他类推
        return new SimpleDateFormat("EEEE").format(c.getTime());
    }


    /**
     * 根据一个日期，返回是星期几的字符串
     *
     * @param sdate
     * @return
     */
    public static String getWeekStr(String sdate) {
        String str = "";
        str = getWeek(sdate);
        if ("1".equals(str)) {
            str = "星期日";
        } else if ("2".equals(str)) {
            str = "星期一";
        } else if ("3".equals(str)) {
            str = "星期二";
        } else if ("4".equals(str)) {
            str = "星期三";
        } else if ("5".equals(str)) {
            str = "星期四";
        } else if ("6".equals(str)) {
            str = "星期五";
        } else if ("7".equals(str)) {
            str = "星期六";
        }
        return str;
    }

    /**
     * 获取两个日期之间的所有日期
     *
     * @param startTime 开始日期
     * @param endTime   结束日期
     * @return
     */
    public static List<String> getinDays(String startTime, String endTime) {

        // 返回的日期集合
        List<String> days = new ArrayList<String>();

        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        try {
            Date start = dateFormat.parse(startTime);
            Date end = dateFormat.parse(endTime);

            Calendar tempStart = Calendar.getInstance();
            tempStart.setTime(start);

            Calendar tempEnd = Calendar.getInstance();
            tempEnd.setTime(end);
            tempEnd.add(Calendar.DATE, +1);// 日期加1(包含结束)
            while (tempStart.before(tempEnd)) {
                days.add(dateFormat.format(tempStart.getTime()));
                tempStart.add(Calendar.DAY_OF_YEAR, 1);
            }

        } catch (ParseException e) {
            e.printStackTrace();
        }

        return days;
    }


    /**
     * 两个时间之间的天数
     *
     * @param date1
     * @param date2
     * @return
     */
    public static long getDays(String date1, String date2) {
        if (date1 == null || date1.equals(""))
            return 0;
        if (date2 == null || date2.equals(""))
            return 0;
        // 转换为标准时间
        SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd");
        Date date = null;
        Date mydate = null;
        try {
            date = myFormatter.parse(date1);
            mydate = myFormatter.parse(date2);
        } catch (Exception e) {
        }
        long day = (date.getTime() - mydate.getTime()) / (24 * 60 * 60 * 1000);
        return day;
    }

    /**
     * 两个时间之间的天数
     *
     * @param date1
     * @param date2
     * @return
     */
    public static long getDays(LocalDateTime date1, LocalDateTime date2) {
        Duration duration = Duration.between(date1, date2);
        return duration.toDays();
    }

    /**
     * 形成如下的日历 ， 根据传入的一个时间返回一个结构 星期日 星期一 星期二 星期三 星期四 星期五 星期六 下面是当月的各个时间
     * 此函数返回该日历第一行星期日所在的日期
     *
     * @param sdate
     * @return
     */
    public static String getNowMonth(String sdate) {
        // 取该时间所在月的一号
        sdate = sdate.substring(0, 8) + "01";

        // 得到这个月的1号是星期几
        Date date = strToDate(sdate);
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        int u = c.get(Calendar.DAY_OF_WEEK);
        String newday = getNextDay(sdate, (1 - u) + "");
        return newday;
    }


    /**
     * 根据用户传入的时间表示格式，返回当前时间的格式 如果是yyyyMMdd，注意字母y不能大写
     *
     * @param sformat
     * @return
     */
    public static String getUserDate(String sformat) {
        Date currentTime = new Date();
        SimpleDateFormat formatter = new SimpleDateFormat(sformat);
        formatter.setTimeZone(TimeZone.getTimeZone("GMT+8"));
        String dateString = formatter.format(currentTime);
        return dateString;
    }


    /**
     * 返回一个i位数的随机数
     *
     * @param i
     * @return
     */
    public static String getRandom(int i) {
        Random jjj = new Random();
        // int suiJiShu = jjj.nextInt(9);
        if (i == 0)
            return "";
        String jj = "";
        for (int k = 0; k < i; k++) {
            jj = jj + jjj.nextInt(9);
        }
        return jj;
    }


    /**
     * 取得数据库主键 生成格式为yyyymmddhhmmss+k位随机数
     *
     * @param k：表示是取几位随机数，可以自己定
     * @return
     */
    public static String getNo(int k) {
        return getUserDate("yyyyMMddhhmmss") + getRandom(k);
    }


    /**
     * 获得前多少秒的时间
     *
     * @param date
     * @param second
     * @return
     */
    public static Date getSecondMinus(Date date, int second) {
        long time = second * 1000;//60秒
//        Date afterDate = new Date(date .getTime() + time);//60秒后的时间
        Date beforeDate = new Date(date.getTime() - time);//60秒前的时间
        return beforeDate;
    }

    /**
     * 获得前多少分钟的时间
     *
     * @param date
     * @param minute
     * @return
     */
    public static Date getMinuteMinus(Date date, int minute) {
        long time = minute * 60000;//60秒
//        Date afterDate = new Date(date .getTime() + time);//60秒后的时间
        Date beforeDate = new Date(date.getTime() - time);//60秒前的时间
        return beforeDate;
    }

    /**
     * 获得前多少分钟的时间
     *
     * @param minute
     * @return
     */
    public static LocalDateTime getMinuteMinus(int minute) {
        LocalDateTime time = LocalDateTime.now();
        return time.minusMinutes(minute);
    }

    public static boolean overtimeCode(Date firstTime, Date lastTime, long overtime) {
        boolean flag = false;
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date one;
        Date two;
//            one = df.parse(firstTime);
//            two = df.parse(lastTime);
        long time1 = firstTime.getTime();
        long time2 = lastTime.getTime();
        long diff = time2 - time1;
        if (diff / 1000 > overtime) {
            flag = true;
        }
        return flag;
    }


    public static int calLastedTime(Date startDate) {
        long a = new Date().getTime();
        long b = startDate.getTime();
        int c = (int) ((a - b) / 1000);
        return c;
    }

    public static String timeStamp2Date(String seconds, String format) {
        if (seconds == null || seconds.isEmpty() || seconds.equals("null")) {
            return "";
        }
        if (format == null || format.isEmpty()) format = "yyyy-MM-dd HH:mm:ss";
        SimpleDateFormat sdf = new SimpleDateFormat(format);
        return sdf.format(new Date(Long.valueOf(seconds + "000")));


//    public static void main(String[] args) {
//        System.out.println(getNo(8));
//    }
    }

    public static Date stringToDate(String dateStr) throws ParseException {
        Date date = new SimpleDateFormat("yyyy-MM-dd").parse(dateStr);
        return date;


//    public static void main(String[] args) {
//        System.out.println(getNo(8));
//    }
    }

    public static LocalDate stringToLocalDate(String dateStr) {
        DateTimeFormatter fmt = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        LocalDate date2 = LocalDate.parse(dateStr, fmt);
        return date2;


//    public static void main(String[] args) {
//        System.out.println(getNo(8));
//    }
    }

    public static LocalDateTime stringToLocalDateTime(String dateStr) {
        DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        LocalDateTime time = LocalDateTime.now();
        String localTime = df.format(time);
        LocalDateTime ldt = LocalDateTime.parse(dateStr, df);
        return ldt;


//    public static void main(String[] args) {
//        System.out.println(getNo(8));
//    }
    }

    /**
     * 获取过去第几天的日期
     *
     * @param past
     * @return
     */
    public static LocalDateTime getPastDate(LocalDateTime today, int past) {
        LocalDateTime time = today.minusDays(past);
        return time;
    }

    /**
     * 获取未来 第 past 天的日期
     *
     * @param past
     * @return
     */
    public static LocalDateTime getFetureDate(LocalDateTime today, int past) {
        LocalDateTime time = today.plusDays(past);
        return time;
    }


    /**
     * 获取两个日期相差 时分
     * @param endDate
     * @param nowDate
     * @return
     */
    public static long getDatePoor(Date endDate, Date nowDate) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        //long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒
        // long sec = diff % nd % nh % nm / ns;
        return hour;
    }

    /**
     * 获取两个日期相差 时分
     * @param endDate
     * @param nowDate
     * @return
     */
    public static double kill2(double num) {
        DecimalFormat format  = new DecimalFormat("#.00");
        String str = format.format(num);
        double v = Double.parseDouble(str);
        return v;
    }





}

